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单项选择题
A.(8.0m,2.7m),(4.0m,2.0m)
B.(9.0m,3.7m),(5.0m,3.0m)
C.(6.0m,1.7m),(3.0m,1.5m)
D.(4.0m,2.0m),(8.0m,2.7m)
单项选择题
A.不满足;不满足
B.满足;不满足
C.不满足;满足
D.满足;满足
单项选择题
A.31.0°
B.24.5°
C.50.2°
D.73.5°
单项选择题
A.1.43
B.1.33
C.2.95
D.1.67
单项选择题
A.100%
B.22%
C.17%
D.36%